fix(cli): contain app-exit races in watcher setup; sync watch docs
A fast one-shot can request exit through ctx.appExit while the launcher still awaits its watcher setup; the failure guard now also swallows the resulting rejections when the tree is no longer live, not only on signal shutdown. Sync the app-boot README and headless bundle comment with unconditional patch watching, and bring the two Agent Notes still asserting the --dev row append and the headlessIo slot current.
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@@ -22,7 +22,7 @@ Two supporting refactors: the webserver's built-in static dist serving became th
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- **Dependency-scan plus partial `patchOrder`** (the original sketch): scanning `dependencies` for bundles and ordering unlisted ones alphabetically has two sources of truth and an implicit tie-break; one explicit ordered `dsh.profile.bundles` list is smaller and fully deterministic. A raw `pnpm add` inside the profile installs a library without activating any patch — explicit, no spooky scan.
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- **`link:` entries for in-box bundles**: pnpm cannot version, install, or update a `link:` into the installation, it embeds a machine path in a user file, and it breaks when the installation moves. The two-anchor resolution plus healed symlink fallback gives the same guarantee ("bundles come from the installation") without ceremony.
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- **A pre-boot `context` module in the bundle manifest** for boot-time values (dist path, flag facts): rejected in favor of pure plugins — the glue is ordinary rows and app-owned startup services, so the composition stays fully dumpable and the manifest stays data-only. The launcher-owned `ctx.headlessIo` host hook is the one host-provided slot, and it is provided in `boot()`'s `prepare` hook, before any config-tree entry mounts.
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- **A pre-boot `context` module in the bundle manifest** for boot-time values (dist path, flag facts): rejected in favor of pure plugins — the glue is ordinary rows and app-owned startup services, so the composition stays fully dumpable and the manifest stays data-only. The launcher-provided host slots (`ctx.cmdlineArgs`, `ctx.appExit`, and the environment snapshot) are provided in `boot()`'s `prepare` hook, before any config-tree entry mounts.
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- **Transitive bundle auto-application**: only direct `dsh.profile.bundles` entries contribute layers; a meta-bundle wanting to re-export another bundle's patch must do so explicitly in its own patch file.
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## Consequences
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